There's a live debate right now about whether user node signaling is sufficient to carry a soft fork, whether the current picture resembles past successful activations.
It's the right question. Here's what the simulation found about what actually determines fork outcomes.
First, a clarification on scope: this research isn't about BIP110 specifically. It's about the general conditions that determine whether a contested soft fork succeeds, fails, or splits the chain. BIP110 is a timely reason to share it.
The clearest result from 2,694 scenarios: there's a threshold in economic adoption below which no mining support can carry a fork and above which miners can't stop it.
Result holds across the range of pool profitability assumptions tested. The contested zone is narrow.
Below that lower threshold, a fork fails regardless of mining support. Above the upper threshold, it succeeds regardless of mining resistance.
What sits between is where mining dynamics actually matter and where most current governance debates are happening.
As for whether user node signaling translates into the kind of economic adoption that moves that threshold, that's a separate question the simulation addresses directly.
Full answer at the UW Bitcoin Research Institute workshop, July 13–17.
#Bitcoin #UWBRI #softfork
Result holds across the range of pool profitability assumptions tested. The contested zone is narrow.
Below that lower threshold, a fork fails regardless of mining support. Above the upper threshold, it succeeds regardless of mining resistance.
What sits between is where mining dynamics actually matter and where most current governance debates are happening.
As for whether user node signaling translates into the kind of economic adoption that moves that threshold, that's a separate question the simulation addresses directly.
Full answer at the UW Bitcoin Research Institute workshop, July 13–17.
#Bitcoin #UWBRI #softfork
After the split, two chains run in parallel and when it breaks, it breaks fast. In the cascade scenarios, the decisive hashrate shift often happens within the first 500 blocks.. Profit-seeking pools drift toward whichever fork the price signal favors. Ideologically-committed pools hold their ground. For a stretch, it looks like a standoff, both chains viable, neither winning cleanly.
What the chart doesn't show is what breaks the standoff. One chain accumulates 2016 blocks first. Its difficulty adjusts sharply down, its blocks become far cheaper to mine. The profitability math flips for every pool still on the other side. Resolution happens fast.
The race that matters in a contested soft fork isn't block-by-block. It's who reaches the difficulty adjustment first. That single event is a cascade trigger and it's why most observable action happens in a compressed window once that threshold is crossed.
Three outcome shapes visible in the data: a clean win for one side, a cascade win for the other, and a contested equilibrium where neither chain breaks through.
General findings and useful frame for any contested fork. Full picture at UW BRI, July 13–17.
#Bitcoin #softfork #UWBRI